Apparatus for testing and disinfecting drain or soil pipes



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W. S. CLARKlv APPARATUS TOR TESTING AND DISINIBGTING DRAIN 0R SOILII-PES.

No. 409,013. Patented Aug. 13, 1889.

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W. s. CLARK.. APPARATUS POR TESTING AND /DISINI'EGTING- DRAIN 0R SQILPIIES. No. 409,013. Patented Aug. 13, 1889.

ATTUHNEY UNITED STATES PATENT OFFICE.

NVILLIAM S. CLARK, -CF PHILADELPHIA, PENNSYLVANIA.

APPARATUS FOR TESTING AND DISINFCTING DRAIN OR SOIL PIPES.`

SPECIFICATION forming part of Letters Patent No. 409,013, dated August13, 1889.

Application filed May 9, 1889. Serial No. 310,182. (No model.)

To all whom. it may concern.-

Beit known that I, WILLIAM S. CLARK, a citizen of the United States,residing at Philadelphia, in the county of Philadelphia and State ofPennsylvania, haveinvented certain new and useful Improvements inApparatus for Testing and Disinfecting Drain or Soil Pipes; and I dohereby declare the following to be a sufficiently full, clear, and exactdescription thereof as to enable others skilled in the art to make anduse the said invention.

This invention relates to the disinfecting and testing of drain or soilpipes, and has for its object the disinfection and deodorizing of suchpipes andthe detection and locating of leaks.

To effect these results, this invention consists in an apparatus for,first, partially closing the inlets and branches of such pipes, and thenforcing into and through them of disiufecting vapors or fumes andafterward closing the outlets and subjecting the pipes to pneumaticpressure with air containing volatile substances which by their odorindicate the location of any leak.

I will nowproceed to fully and particularly describe my invention,referring in so doing to the annexed drawings, in which- Figure 1 showsa building in vertical seetion, having soil and drain pipes to whichthis apparatus is applied. Fig. 2 shows a section of a pipe end with aplug applied. Figs. 3 and 4 show the parts of the plug in sectionseparately. Fig. 5 shows a section of the air forcing and fumigatingapparatus; and Figs. G and 7 show modifications of the fumigating ordisiufecting apparatus in vertical section.

The same letters of reference and ordinals indicate the same parts inthe several figures.

A represents a soil-pipe united by bell and spigot joints A', leaded andealked in the usual manner, and having branches A2 for receivingdrainage, and the usual trap A.'g and outlet A4 to the common sewer orculvert.

B are stoppers inserted in `the inlets A2 and outlets Af. The stopper Bconsists of a circular hollow conical metallic plug 3', provided with aflange B2, formed with a step or shoulder B3 upon it, and a conical capB4, fitting over lthe plulg B, also provided with a .f f I l fiange orrim B5, having a shoulderB6 formed upon it. curely fixeda'screw-threadedtube B, which passes through the cap Bv1 and is provided with a wing-nutB7. A band of india-rubbcr B8 is fitted around the plug B, between theflanges B2 and B5. When the cap Blis raised from the plug 3', the rubberband 3S rests upon the step B3 in the flange B2 and the shoulder B inthe cap B1. As the cap B" is forced, by screwing the wing-nut B7 on thetube B", toward the plug B', the band BS, under the compression, expandsin the center of its length, and the ends of the baud BS, turning uponthe angle of the shoulders 'B3 and B, rest around the 'shoulders B3 andB, and with what was before expansion the edges of the oylindric face ofthe band Bnow as fiat surfaces, 'rest against the flanges B2 and B5,thus producing a greater extent of expansion than was practicable withthe flanges B2 and B5 without the shoulders B3 and B The exterior formof the plug B and the interior form of the cap Bf are such that they fitwithin each other and touch at the upper ends, thus restrictingexcessive motion and injury t0 the flanges B2 and B5 by forcing themunduly close to each other. This construction of plug' adapts it to fita larger range of diameters of pipes than when the india-rubber issimply compressed between flat flanges and thereby diametricallyexpanded, and is more flexible and readily adapts itself to anyimperfections of the interior surfaces of pipes. A stop-cock B10 orvalve serves to open and close communication with the pipe through thetube B9.

C is an airepump, consisting of a cylinder C', detachably connected to abase bed-plate E, a piston C2, inlet-passage C3, and outletvalve C4,terminating in a two-branched tube C5,one of which branches isconnected, through an inverted-Siphon seal Cwith a lnanometer orpressuregage C7 and. a Siphon-gage C10, which are to be used alternatelyfor low and high pressures, and the other branch with a tube CS, leadingto one of the stop-cocks B10 on one of the plugs B, inserted in a branchA2 of the soil-pipe A to be fumigated and tested. Stop-c0cks C11 and C12are placed in the manometer and Siphon-gage connections.

Connected with the inlet-passage C13 is a Centrally into the plug' B isse,

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fumigating chamber or vessel D, having au air-inlet valve D', openingdownward and supported by light springs at the upper portion, aperforated vessel D2, filled with an absorbent material D3-such as asponge-and a perforated tube D, leading to the passage C3 and containingthe iulet-valve C of the pump C, which is constructed like the valve D2and is removably inserted in the base of the fumigatingchamber D in thebeihplate E. The perforated vessel D2 is removable and can be replacedby a vessel for burning sulphur, as shown in Fig, 6,011 by a vessel forholding volatileiiuids, as shown in Fig. 7, instead of the saturatedsponge D.

The operation of disinfecting and testing with this apparatus is asfollows: The plugs l; are inserted in the branches Agand outlets A", andthe nuts B7 tightened, so as to expand the packing B3. 'lhedisinfecting-iiuid is introd u ced in thevessel D and airdrawn throughit and forced through the tube C"l and ont of the stop-cocks B until theescaping air passing from the other stop-cocks B indicates by its odor,and the Siphon-gage C1, indicating the resistance to the air made by thetrapseals of the pipes, shows that the disinfecting agent has reachedthat part. All of the stopcocks B1, except that connected with thc tubeUs, arc then closed and the pump is operated until the desired pressureis indicated by the manometer C7. The stop cock Cl2 is then closed, andif the manomcter shows a continuance of the full pressure the pipes Aare known to be tight. If, however, the pressure is shown to subside onthe inanometer, an examination of the pipe A will show by the odor ofthe escaping disinfectant or fumigatingvapors the location of the leak,which, being repaired,lthe test is repeated. Until thcpressure remainsconstant on the manometer, by drawing the air through thefumigating-vessel, disinfectants-such as sulphur--can be used, whichcannot be done when the fumigating-chamber is under pressure with thepipes under test. i

Having described my invention what I claim isl. A fumigating-vesselhavnga sp1-in r-supported air-inlet valve opening downward in the top, aremovable perforated support for combustible fumigating material, andanoutlet-tube at the base connected and combined with the inlet-valve ofan air-forcing pump, constructed and arranged to operate substantiallyas set forth.

2. The combination of the air-pump C with the bed-plate E, and thefumigating-vessel l) continuing the relnovably-attached pump,inlet-Valve Cm, and air-inlet valve D', said fumigating-vesscl beingdetachably connected to thc bed-plate E, substantially as shown anddescribed.

The combination of the air-pump C, supported by the bed-plate E, whichis provided with the valve C", with the vessel D, provided with thepump-inlet spring-valve (J,tl1e manomcter (JT, Siphon-seal O1", andSiphon-gage C1, provided with the cocks C and C12, substantially asshown and described, and for the purpose set forth.

\VILLIAM S. CLARK.

\Vitnesses:

J. DANIEL EBY, A. V. Uno

